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Updated: Feb 24, 2026

Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Immunoglobulin binding (B1) domain mediated antibody conjugation to quantum dots for in vitro and in vivo molecular
Setsuko Tsuboi1, Akira Sasaki, Takao Sakata
1Laboratory for Nano-Bio Probes, Quantitative Biology Center (QBiC), RIKEN, Suita, Osaka 565-0874, Japan. tjin@riken.jp.
A facile method for the preparation of antibody-quantum dot (QD) conjugates using the immunoglobulin binding (B1) domain of protein G is presented. The utility of antibody-QD conjugates using the B1 domain is demonstrated for fluorescence imaging of breast tumor cells in vitro and in vivo.
A facile method for the preparation of antibody-quantum dot (QD) conjugates using the immunoglobulin binding (B1) domain of protein G is presented. The utility of antibody-QD conjugates using the B1 domain is demonstrated for fluorescence imaging of breast tumor cells in vitro and in vivo.
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